Problems

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
0-1 Sequences	8811	1283	15%	0.00	1683	835	50%	6.5
10 Kinds of People	20310	4129	20%	0.01	3423	2481	72%	4.4
2, 4, 6, Greaaat	87	16	18%	0.23	14	10	71%	7.6
2048	8661	4011	46%	0.00	3828	3283	86%	2.2
3-Sided Dice	2434	204	8%	0.00	399	143	36%	8.6
3D Printed Statues	10516	4824	46%	0.00	4430	3969	90%	2.0
3D Printer	762	140	18%	0.00	312	108	35%	8.6
4 thought	8833	2999	34%	0.00	2955	2470	84%	2.6
A Brief Gerrymander	291	53	18%	0.15	71	36	51%	8.6
A Classy Problem	9971	2494	25%	0.01	2212	1694	77%	4.5
A Different List Game	6938	486	7%	0.00	879	175	20%	9.2
A Different Problem	31799	11668	37%	0.00	10806	9351	87%	2.5
A Favourable Ending	1703	445	26%	0.00	409	317	78%	4.4
A Feast For Cats	2427	897	37%	0.00	584	496	85%	4.0
A Flea on a Chessboard	481	107	22%	0.01	119	87	73%	5.6
A Horse Shoe-In	78	8	10%	0.45	10	7	70%	6.7
A List Game	8661	2554	29%	0.00	2440	2049	84%	3.0
A Mazing!	2722	607	22%	0.09	294	221	75%	5.3
A Multiplication Game	790	272	34%	0.00	307	229	75%	4.7
A New Adventure	987	152	15%	0.00	165	111	67%	6.1
A New Alphabet	11207	5015	45%	0.00	4653	4300	92%	1.7
A+B Problem	8319	816	10%	0.03	1156	386	33%	8.3
A1 Paper	5466	1609	29%	0.00	1577	1246	79%	3.8
ABC	14079	6383	45%	0.00	6034	5491	91%	1.8
ACM Contest Scoring	7010	4363	62%	0.00	3860	3646	94%	1.5
AI Jeopardy	418	43	10%	0.02	43	31	72%	8.0
Aaah!	29307	13623	46%	0.00	12156	11342	93%	1.5
Ab Initio	1135	214	19%	0.09	173	106	61%	7.6
Abandoned Animal	2045	444	22%	0.03	512	371	72%	5.1
Above Average	9401	3839	41%	0.00	3755	3367	90%	2.0
Abstract Art	382	123	32%	0.00	100	77	77%	5.5
Abstract Painting	387	154	40%	0.00	145	112	77%	4.9
Absurdistan Roads II	637	220	35%	0.00	214	144	67%	6.8
Absurdistan Roads III	1548	448	29%	0.02	418	319	76%	5.5
Access Points	420	147	35%	0.01	139	108	78%	5.6
Add 'Em Up!	1043	288	28%	0.01	279	218	78%	4.0
Adding Words	10988	2604	24%	0.00	2503	1932	77%	4.0
Adjoin the Networks	2139	564	26%	0.00	473	379	80%	5.3
Administrative Difficulties	1314	275	21%	0.03	294	201	68%	6.3
Ads	606	34	6%	0.00	83	19	23%	6.5
Advanced Causal Measurements	114	36	32%	0.10	33	27	82%	6.1
Adventure Begins	268	86	32%	0.06	91	69	76%	4.7
Adventures in Moving -- Part IV	1370	313	23%	0.00	273	227	83%	4.6
Air Conditioned Minions	5235	1444	28%	0.00	1516	1148	76%	4.0
Airline Hub	1839	348	19%	0.01	374	215	57%	6.6
Airport Coffee	892	191	21%	0.09	180	128	71%	7.0
Airport Construction	3495	452	13%	0.02	377	202	54%	7.5
Airport Logistics	67	15	22%	0.00	22	15	68%	7.3
Airports	486	150	31%	0.11	130	94	72%	6.4
Akcija	7659	3425	45%	0.00	3102	2763	89%	2.0
Aladin	762	78	10%	0.10	126	30	24%	8.4
Alchemy	136	24	18%	0.02	36	21	58%	7.5
Alea iacta est	42	16	38%	0.19	19	15	79%	6.4
Alehouse	307	111	36%	0.03	93	68	73%	6.0
Alex and Barb	202	59	29%	0.00	81	54	67%	5.5
Alice in the Digital World	4865	1137	23%	0.01	1020	790	77%	4.2
Alien Codebreaking	242	14	6%	3.23	42	11	26%	9.2
Alien Numbers	2349	1204	51%	0.00	1184	1073	91%	2.1
All Different Directions	1364	563	41%	0.00	526	462	88%	2.6
All Friends	878	165	19%	0.00	158	80	51%	8.9
All Just A Dream	1983	449	23%	0.05	320	226	71%	6.3
All Kill	21	16	76%	0.00	15	14	93%	4.7
All Pairs Shortest Path	9374	1660	18%	0.00	1145	809	71%	5.6
All about that base	2911	1155	40%	0.00	1122	946	84%	2.9
All is Well	87	26	30%	0.03	24	22	92%	4.7
Allergy Test	545	143	26%	0.00	166	87	52%	7.5
Alloys	287	97	34%	0.00	101	85	84%	4.7
Almost Perfect	8212	1911	23%	0.00	2024	1597	79%	3.3
Almost Union-Find	6885	1224	18%	0.02	1121	643	57%	7.0
Alphabet	1617	812	50%	0.00	828	699	84%	3.2
Alphabet Animals	2046	638	31%	0.00	631	510	81%	3.3
Alphabet Spam	8344	5151	62%	0.00	4241	4073	96%	1.4
Alternative Bracket Notation	209	89	43%	0.00	95	79	83%	5.0
Altruistic Amphibians	445	122	27%	0.22	102	75	74%	4.7
Amalgamated Artichokes	4153	1854	45%	0.01	1640	1436	88%	2.7
Amanda Lounges	1524	451	30%	0.03	394	315	80%	5.4
Amazing Adventures	374	100	27%	0.02	113	80	71%	6.1
Amazing Race	340	91	27%	0.29	95	67	71%	7.5
Ambiguous Result	265	57	22%	0.02	88	54	61%	8.1
Amsterdam Distance	1560	695	45%	0.00	719	595	83%	2.9
An I for an Eye	773	189	24%	0.00	217	153	71%	5.0
An Industrial Spy	1705	902	53%	0.02	672	578	86%	3.2
Anagram Counting	3728	1427	38%	0.00	1385	1153	83%	3.1
Andrew the Ant	351	97	28%	0.05	104	81	78%	3.6
Animal Classification	1566	355	23%	0.03	308	203	66%	6.8
Another Brick in the Wall	3376	1678	50%	0.00	1614	1475	91%	1.9
Another Candies	8227	2255	27%	0.00	2297	1909	83%	2.5
Another Coin Weighing Puzzle	322	108	34%	0.00	93	80	86%	4.4
Another Dice Game	108	69	64%	0.00	67	58	87%	4.7
Another Query on Array Problem	1644	217	13%	0.05	337	152	45%	7.6
Antenna Placement	144	65	45%	0.00	46	37	80%	5.6
Anthony and Cora	930	248	27%	0.00	287	205	71%	5.2
Anthony and Diablo	3296	1143	35%	0.00	1150	999	87%	2.4
Antiarithmetic?	1572	288	18%	0.01	353	205	58%	7.2
Ants	3790	1683	44%	0.00	1361	1192	88%	2.5
Apaxiaaaaaaaaaaaans!	13470	8222	61%	0.00	7287	6976	96%	1.4
Apostrophe Catastrophe	112	26	23%	0.00	29	19	66%	6.8
Appalling Architecture	728	212	29%	0.00	184	152	83%	4.0
Apparatus	705	175	25%	0.01	144	106	74%	5.9
Apple Market	477	99	21%	0.07	122	62	51%	8.2